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Aggregate Impact Tester
Aggregate Impact Tester (Product Code: SLE/CE/94) is a drop-hammer apparatus used to determine the aggregate impact value, a relative measure of how well road and concrete aggregate resists sudden shock, in civil engineering laboratories. Highway materials labs and engineering colleges use it for toughness testing, and its 13.75 kg hammer falls freely through an adjustable 380 mm height between two vertical guides. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Frame | Circular base with two vertical guides |
| Hammer weight | 13.75 ±0.25 kg, raised and released to fall freely down the guides |
| Height of fall | Adjustable through 380 ±5 mm |
| Hammer locking | Locking arrangement provided; hammer is removable |
| Blow counter | Fitted at the top of the equipment to count the number of strokes |
| Metal measure | 75 mm diameter × 50 mm high (supplied) |
| Tamping rod | 230 mm long × 10 mm diameter (supplied) |
| Product code | SLE/CE/94 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Aggregate Impact Tester Used For?
The aggregate impact value (AIV) test shows how an aggregate behaves under the repeated shocks that traffic and compaction apply to road layers. A sized sample is measured out in the 75 mm × 50 mm metal measure, compacted with the 10 mm tamping rod and set in position on the base. The hammer is lifted to the set height and dropped the number of times the method specifies, with the blow counter keeping the tally.
The crushed sample is then sieved, and the fines produced are expressed as a percentage of the original mass; a lower figure means a tougher aggregate. Colleges often run this test alongside the crushing value test so students can compare static and dynamic strength. This robust frame is typical of the engineering lab equipment in India used by polytechnics and TVET centres; always engage the hammer lock while placing or removing the sample.
What to Specify When Ordering
- Number of Aggregate Impact Testers required
- Any spare metal measures or tamping rods beyond those supplied
- Whether test sieves for the sieving step are also needed
OEM Manufacturer
The Aggregate Impact Tester is built by Jain Scientific Equipments Private Limited, which trades as ScienceLab, acting as the original equipment manufacturer. Its base, guides, hammer and counter mounting are produced and assembled at the company's own licensed factory at Saha, Ambala, Haryana, India.
Engineering institutions, testing laboratories, dealers and importers buy direct from the maker, so questions on spares or repeat orders go straight to the people who build it. Read about the company on the ScienceLab company profile.
Related Civil Engineering Lab Equipment
These items are used in the same aggregate quality programme:
- Aggregate Crushing Value Apparatus — measures resistance to a slowly applied crushing load
- Test Sieves — for preparing the sized sample and sieving out fines after impact
- Digital Los Angles Abrasion Testing Machine — checks resistance to abrasion and wear
- Flakiness Sieve Set — assesses particle shape, which affects impact results
See all Civil Engineering Lab Equipment for aggregate, soil and concrete testing.
Frequently Asked Questions
What hammer weight and drop height does the Aggregate Impact Tester use?
The Aggregate Impact Tester uses a hammer weighing 13.75 ±0.25 kg that falls freely down two vertical guides. The height of fall can be adjusted through 380 ±5 mm, so the drop can be set to the height your test method requires.
What accessories are supplied with the Aggregate Impact Tester?
The Aggregate Impact Tester is supplied complete with a metal measure 75 mm in diameter and 50 mm high, and a tamping rod 230 mm long and 10 mm in diameter. A blow counter is fitted at the top of the frame to count the strokes.
How is the hammer made safe while loading the Aggregate Impact Tester?
The hammer of the Aggregate Impact Tester has a locking arrangement, so it can be held in the raised position while the sample is placed or removed. Release the lock only when hands are clear and the sample is in position on the base.
What does the aggregate impact value tell a laboratory?
The aggregate impact value from the Aggregate Impact Tester is a relative measure of an aggregate's resistance to sudden shock or impact. It is reported as the percentage of fines produced, so a lower value indicates a tougher aggregate for road and concrete use.
Who manufactures the Aggregate Impact Tester?
The Aggregate Impact Tester is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab) as the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Quotations and spare-part questions are answered by the manufacturer directly.
Is a calibration certificate available for the Aggregate Impact Tester?
Calibration-certificate availability for the Aggregate Impact Tester is not stated in its listing, so please raise it with us through the contact page before ordering. Mention the test method you follow so we can give a clear answer.
Request a Quote
To receive a quotation for the Aggregate Impact Tester (SLE/CE/94), send the quantity and any extra measures or rods through our contact page, or use the enquiry cart. Prices come direct from the manufacturer for India and international markets.
Last updated: 24 September 2026
